Electromyography is generally not a direct diagnosis of trigeminal neuralgia, but may be an adjunctive support for the diagnosis of the disease. Trigeminal neuralgia is mainly based on the patient’s symptoms and manifestations to combine with auxiliary examination to consider comprehensively. Generally more common in the clinic, is caused by abnormal nerve discharge, can be divided into primary and secondary. The etiology of primary ischemia is not clear, and secondary may be caused by space-occupying lesions in the brain or herpes zoster. Trigeminal neuralgia is usually characterized by episodic pain in the distribution area of the ophthalmic nerve, which can occur in different parts of one side of the eye socket, periorbital maxilla, mandible, etc., with a pinprick-like or knife-cutting pattern. The duration is mostly a few seconds to one to two minutes, recurrent, and there may be trigger points, such as a sudden onset of symptoms when brushing teeth, washing face, or eating. If you experience trigeminal neuralgia, you should seek medical attention as soon as possible and see a specialist in neurology.